When Dumbledore dueled Voldemort in the fifth book as master of the Elder Wand, why couldn't he defeat Voldemort?
Why are the duels between Harry and Voldemort so lackluster when compared to Dumbledore and Voldemort?

Please tell me if those questions are the same.
A: no

What is the salary of an IIT faculty?
What is the salary of an IIT professor?

Please tell me if those questions are the same.
A: yes

How do know when you're in love?
How do you know when it is true love?

Please tell me if those questions are the same.
A:
yes